Comment 1 for bug 2041167

My gut feeling is that new relation with grafana-agent would be required instead of using the existing juju-info relation.

  juju-info:
    description: |
      `juju-info` provides basic compatibility with all charms.
      If all you want is /var/log logs and node_exporter metrics,
      this relation will be enough.
    interface: juju-info
    scope: container
  cos-agent:
    description: |
      `cos-agent` is a dedicated relation for the grafana agent machine
      charm. It will allow you to set up custom scrape jobs, fetch files
      from arbitrary locations, send alert rules, dashboards, etc.
    interface: cos_agent
    scope: container